CdS-pillared CoAl-layered double hydroxide nanosheets with superior photocatalytic activity

A new nanohybrid was synthesized by mixing the positively charged 2D nanosheets of CoAl-layered double hydroxide (CoAl-LDH) and the negatively charged CdS nanosol suspensions. It was revealed that the CdS nanoparticles were intercalated into the interlayer region of CoAl-LDH with a spacing of 2.62 nm. The obtained nanohybrid exhibited a mesoporous texture with an expanded specific surface area of 62 m(2) g(-1) and a superior photocatalytic activity in the degradation of acid red with a reaction constant of 1.26 x 10(-2) min(-1) under visible-light radiation, which is more than 2 times those of his parents CoAl-LDH and CdS. (C) 2015 Elsevier Ltd. All rights reserved.